Three-dimensional floating bed for purification of black and odorous rivers and building method

Abstract

The invention provides a three-dimensional floating bed for purification of black and odorous rivers and a building method for the three-dimensional floating bed. A fence formed by PVC pipes and polyvinyl net is divided from top to bottom into an upper layer of floating plant growing region, a middle layer of artificial medium region and a lower layer of artificial medium region, wherein water plants with relatively developed root systems are planted on the upper layer; a biological membrane is formed on the middle layer by hanging pieces with rough surfaces and acts together with the root region of the plants on the upper layer, and organic substances are decomposed by oxygen generated by the plants; floating filler net is hung on the lower layer, and is filled with anaerobic bacteria according to different forming reasons of the black and odorous rivers, wherein the anaerobic bacteria are attached to an artificial hanging membrane, and domesticated to achieve high tolerance and degradation capability to pollutants. The three-dimensional floating bed provided by the invention has the advantages as follows: the manufacturing method of the floating bed is simple and convenient, the cost is lower, and the three-dimensional floating bed has an enhanced improvement effect on black and odorous rivers with high pollutant burdens.

Description

technical field [0001] The invention relates to a method for purifying black and odorous rivers, in particular to a method for constructing a three-dimensional floating bed for purifying black and odorous rivers. Background technique [0002] With the development of social production, the water quality of rivers all over the world is facing different degrees of pollution from industry, agriculture, life and other aspects. River pollution is one of the environmental problems that is currently receiving increasing attention. Due to the presence of a large number of pollutants in the water body, the concentration of dissolved oxygen in the water body is reduced or even zero, resulting in black and smelly river water and the extinction of fish and shrimp. Polluted rivers not only lose resource function and use value, but also seriously damage the surrounding environmental landscape, and even endanger the health of river residents. At present, the seven major river basins in my ...

AI Technical Summary

Problems solved by technology

However, the dissolved oxygen in black and odorous rivers is extremely low. When the existing floating bed is in use, it is easy to attach and grow black or odor-causing anaerobic microorganisms on the artificial filler, which cannot achieve the effect of purifying water quality.

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